Tuning the formal potential of ferrocyanide over a 2.1 V range
作者:Brendon J. McNicholas、Robert H. Grubbs、Jay R. Winkler、Harry B. Gray、Emmanuelle Despagnet-Ayoub
DOI:10.1039/c8sc04972f
日期:——
We report the synthesis and characterization of homoleptic borane adducts of hexacyanoferrate(II). Borane coordination blueshifts d–d transitions and CN IR and Raman frequencies. Control over redoxproperties is established with respect to borane Lewis acidity, reflected in peak anodic potential shifts per borane of +250 mV for BPh3 and +350 mV for B(C6F5)3. Electron transfer from [Fe(CN-B(C6F5)3)6]4−
我们报告了六氰合铁酸盐(II)的均相硼烷加合物的合成和表征。硼烷配位使d-d跃迁以及CN IR和拉曼频率发生蓝移。建立关于硼烷路易斯酸度的氧化还原性质的控制,反映为BPh 3的每硼烷的峰值阳极电势为+250 mV,B(C 6 F 5)3的+350 mV 。电子从[Fe(CN-B(C 6 F 5)3)6 ] 4-转移至光生化的[Ru(2,2'-联吡啶)3 ] 3+非常快,与伏安法数据一致。路易斯酸的配位为氰基金属酸盐的电子结构和电化学性质的选择性修饰提供了途径。